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202 lines
6.8 KiB
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content=
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"application/xhtml+xml; charset=utf-8" />
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<title>
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5.8. Libstdc++-4.9.2
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</title>
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<link rel="stylesheet" type="text/css" href="../stylesheets/lfs.css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.78.1" />
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</head>
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<body class="lfs" id="lfs-7.7-systemd">
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<div class="navheader">
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<h4>
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Linux From Scratch - Version 7.7-systemd
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</h4>
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<h3>
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第五章 构建临时系统
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</h3>
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<ul>
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<li class="prev">
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<a accesskey="p" href="glibc.html" title="Glibc-2.21">上一页</a>
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<p>
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Glibc-2.21
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</p>
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</li>
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<li class="next">
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<a accesskey="n" href="binutils-pass2.html" title=
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"Binutils-2.25 - 第2遍">下一页</a>
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<p>
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Binutils-2.25 - 第2遍
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</p>
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</li>
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<li class="up">
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<a accesskey="u" href="chapter05.html" title=
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"第五章 构建临时系统">返回</a>
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</li>
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<li class="home">
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<a accesskey="h" href="../index.html" title=
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"Linux From Scratch - Version 7.7-systemd">主页</a>
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</li>
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</ul>
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</div>
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<div class="wrap" lang="en" xml:lang="en">
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<h1 class="sect1">
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<a id="ch-tools-libstdcpp" name="ch-tools-libstdcpp"></a>5.8.
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Libstdc++-4.9.2
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</h1>
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<div class="package" lang="en" xml:lang="en">
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<p>
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Libstdc++ 是标准的 C++ 库。g++ 编译器正确运行需要它。
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</p>
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<div class="segmentedlist">
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<div class="seglistitem">
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<div class="seg">
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<strong class="segtitle">大概编译时间:</strong>
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<span class="segbody">0.3 SBU</span>
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</div>
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<div class="seg">
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<strong class="segtitle">所需磁盘空间:</strong>
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<span class="segbody">798 MB</span>
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</div>
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</div>
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</div>
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</div>
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<div class="installation" lang="en" xml:lang="en">
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<h2 class="sect2">
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5.8.1. 安装目标 Libstdc++
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</h2>
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<div class="admon note">
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<img alt="[Note]" src="../images/note.png" />
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<h3>
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注意
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</h3>
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<p>
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<span class="application">Libstdc++</span> 是 GCC 源文件的一部分。你首先应该解压 GCC tar 包，然后进入 <code class="filename">gcc-4.9.2</code> 文件夹。
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</p>
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</div>
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<p>
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为 Libstdc++ 创建一个文件夹并进入：
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</p>
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<pre class="userinput">
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<kbd class="command">mkdir -pv ../gcc-build
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cd ../gcc-build</kbd>
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</pre>
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<p>
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准备编译 Libstdc++：
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</p>
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<pre class="userinput">
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<kbd class="command">../gcc-4.9.2/libstdc++-v3/configure \
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--host=$LFS_TGT \
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--prefix=/tools \
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--disable-multilib \
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--disable-shared \
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--disable-nls \
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--disable-libstdcxx-threads \
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--disable-libstdcxx-pch \
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--with-gxx-include-dir=/tools/$LFS_TGT/include/c++/4.9.2</kbd>
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</pre>
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<div class="variablelist">
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<p class="title">
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<strong>配置选项的含义:</strong>
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</p>
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<dl class="variablelist">
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<dt>
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<span class="term"><em class=
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"parameter"><code>--host=...</code></em></span>
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</dt>
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<dd>
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<p>
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指示使用我们刚才编译的交叉编译器，而不是 <code class="filename">/usr/bin</code> 中的。
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</dd>
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<dt>
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<span class="term"><em class=
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"parameter"><code>--disable-libstdcxx-threads</code></em></span>
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</dt>
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<dd>
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<p>
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由于我们还没有编译 C 线程库，C++ 的也还不能编译。
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</p>
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</dd>
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<dt>
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<span class="term"><em class=
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"parameter"><code>--disable-libstdcxx-pch</code></em></span>
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</dt>
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<dd>
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<p>
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这个选项防止安装预编译包括的问题，这里并不需要。
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</p>
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</dd>
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<dt>
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<span class="term"><em class=
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"parameter"><code>--with-gxx-include-dir=/tools/$LFS_TGT/include/c++/4.9.2</code></em></span>
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</dt>
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<dd>
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<p>
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这是 C++ 编译器搜索标准 include 文件的位置。在一般的编译中，这个信息自动从顶层文件夹中传入 Libstdc++
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<span class="command"><strong>configure</strong></span> 选项。在我们的例子中，必须明确给出这信息。
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</p>
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</dd>
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</dl>
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</div>
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<p>
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编译 libstdc++:
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</p>
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<pre class="userinput">
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<kbd class="command">make</kbd>
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</pre>
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<p>
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安装库:
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</p>
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<pre class="userinput">
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<kbd class="command">make install</kbd>
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</pre>
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</div>
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<div class="content" lang="en" xml:lang="en">
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<p>
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该软件包的详细信息在 <a class="xref" href=
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"../chapter06/gcc.html#contents-gcc" title=
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"6.17.2. GCC 的内容">6.17.2, “GCC 的内容”</a>
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</p>
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</div>
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</div>
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<div class="navfooter">
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<div class="book">
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<div class="titlepage">
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<div class="author">
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<span class="firstname">翻译团队：<a href="http://lctt.github.io/" target="_blank">LCTT</a></span>
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<span class="surname">译者/校对：<a href="http://github.com/ictlyh" target="_blank">ictlyh</a>,</span>
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</div>
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</div>
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</div>
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<ul>
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<li class="prev">
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<a accesskey="p" href="glibc.html" title="Glibc-2.21">上一页</a>
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<p>
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Glibc-2.21
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</p>
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</li>
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<li class="next">
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<a accesskey="n" href="binutils-pass2.html" title=
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"Binutils-2.25 - 第2遍">下一页</a>
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<p>
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Binutils-2.25 - 第2遍
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</p>
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</li>
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<li class="up">
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<a accesskey="u" href="chapter05.html" title=
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"第五章 构建临时系统">返回</a>
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</li>
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||
<li class="home">
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||
<a accesskey="h" href="../index.html" title=
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"Linux From Scratch - Version 7.7-systemd">主页</a>
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</li>
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||
</ul>
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</div>
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</body>
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</html>
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